CN104826972B - The continuous upsetting die of I shape joint and forming technology thereof - Google Patents
The continuous upsetting die of I shape joint and forming technology thereof Download PDFInfo
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- CN104826972B CN104826972B CN201510228081.5A CN201510228081A CN104826972B CN 104826972 B CN104826972 B CN 104826972B CN 201510228081 A CN201510228081 A CN 201510228081A CN 104826972 B CN104826972 B CN 104826972B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
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Abstract
A kind of continuous upsetting die of I shape joint and forming technology thereof; this mould includes: be arranged in order extruding punch mechanism, jumping-up punch and the finish-forging punch and the die assembly being slideably positioned in mould bases opposite side being fixed on mould bases, wherein: three punch share a set of die assembly；Die assembly includes: upper cavity die, with the lower cavity die of push rod and angled-lift splits, wherein: form cylindrical mold cavities when upper cavity die, lower cavity die and angled-lift splits Guan Bi.Present invention, avoiding conventional multiple operation and forge the problem that workpiece between each operation needs to take out, significantly improved production efficiency, reduced cost per unit, it is achieved that the batch of such part produces continuously.
Description
Technical field
The present invention relates to the technology of a kind of field of machining, specifically a kind of continuous upsetting die of I shape joint
And forming technology.
Background technology
I shape joint is a kind of nonstandard heteromorphic connector, and intermediate shank portion has step, and two ends nose shape is different, due to its shape
The complexity of shape, generally uses casting technique to manufacture.But, the joint part produced by casting technique, its quality
Influence factor complicated, be easily formed the casting flaws such as pore, shrinkage cavity and sand holes；Due to cast sturcture, its mechanical property is relatively
Difference, affects the bonding strength of member diameters.
Through the retrieval of prior art is found, Chinese patent literature CN101444816, open (bulletin) day
2009.06.03, disclosing the process for forging of a kind of I-shaped part, cylinder blank is swaged into rectangular parison by this technology
Material, according to forge weight, uses band saw cutting stock, goes out the mistake of the head of I-shaped structure part and head and bar portion with loose tooling forging
At degree, described blank is allocated simultaneously, then with falling die forging rod portion, puts described forging into finishing mold and press from both sides
Tightly, hold up mould to forge, it is ensured that home record two plane smooth, then set level mould and forge.Compared with Integral die-forged, the method is forged
Two planes of I-shaped structure part home record can reach the strict demand of the depth of parallelism and flatness, no longer carry out machinery and add
Work.But, the I shape forging that the method relates to, bar portion is little with head difference and symmetrical, is formed relatively simple；And it is used
During swage forging is only applicable to, small lot batch manufacture.
Retrieving discovery further, Deng Yushan, Yao Xiaojing are at " about the analysis of i shaped cross section die-forging of forge pieces work step " (" mould
Tool technology " phase nineteen ninety 01) middle proposition: in blocking, take oval die cavity, make metal Free Transform and form overlap, finish-forging
Time can avoid eddy current and wear rib defect, improve forging surface and internal soundness.But, overlap needs follow-up carrying out earnestly；If flying
Limit is oversize, and stock utilization is low.
For the I shape forging of complicated shape, particularly geomery differs greatly, if using hot forging technique,
Can produce the biggest overlap along forging cross section, waste of material is serious；Owing to two ends are complex-shaped, it is easily caused and is not fully filled, blocking
Difficult design.If using loose tooling forging technique, operation length and inappropriate tissue to produce in enormous quantities.
Summary of the invention
The present invention is directed to deficiencies of the prior art, propose a kind of continuous upsetting die of I shape joint and one-tenth thereof
Shape technique, it is to avoid conventional multiple operation forges the problem that workpiece between each operation needs to take out, and has significantly improved production efficiency, fall
Low cost per unit, it is achieved that the batch of such part produces continuously.
The present invention is achieved by the following technical solutions:
The present invention relates to a kind of continuous upsetting die of I shape joint, including: it is arranged in order the extruding being fixed on mould bases
Punch mechanism, jumping-up punch and finish-forging punch and be slideably positioned in the die assembly of mould bases opposite side, wherein: three punch are altogether
With a set of die assembly.
Described die assembly includes: upper cavity die, with the lower cavity die of push rod and angled-lift splits, wherein: upper cavity die, recessed
Cylindrical mold cavities is formed when mould and angled-lift splits Guan Bi.
Described upper cavity die and angled-lift splits are side core-drawing mechanism of slanting sliding block, and the lateral wall of angled-lift splits is for tilting and meeting Wherein: p is inclination angle, angled-lift splits lateral wall；h2For angled-lift splits height；d4For the greatest length of workpiece lower end.
Described push rod totally four, is movably set in lower cavity die respectively, and the upper end of this push rod contacts with angled-lift splits.
Described extruding punch mechanism includes: the extrusion die plate that is socketed the most successively, guiding mechanism, compression sleeve and
Punch, wherein: the top of compression sleeve and extrusion die plate Elastic Contact, punch be movably set in that compression sleeve is internal and top with
Extrusion die plate is connected.
Described heading die structure: jumping-up template, guiding mechanism, jumping-up sleeve and the jumping-up being socketed the most successively
Punch, wherein: the top of jumping-up sleeve and jumping-up template Elastic Contact, jumping-up punch is movably set in jumping-up sleeve inner and top
Portion is connected with jumping-up template.
Described Elastic Contact is by being arranged at top and extrusion die plate or the jumping-up template of compression sleeve or jumping-up sleeve
Between flexible member realize.
Described guiding mechanism includes: guide positioning sleeve and guiding guide, wherein: guide positioning sleeve and extrusion die plate or upsetting
Roughcast plate is fixing to be connected, and hole cylinder shape guides guide and is socketed on inside guide positioning sleeve by ledge structure, compression sleeve or
Jumping-up sleeve is movably set in guiding guide.
Described finish-forging die structure: cope match-plate pattern and be fixedly installed on finish-forging punch thereon.
The present invention relates to a kind of I shape joint Forging Technology, comprise the following steps:
The first step, blanking, use bar, blank diameter is less than joint intermediate shank portion diameter 0.1mm, and charge length is according to zero
Part volume calculating obtains；
Second step, lower end head extrudes: blank is put into die, and punch alignment die, punch moves downward, extruded sleeve
First cylinder contacts with die, and punch continues to decline, and extrusion billet makes blank lower end head gradually shape, and after shaping, punch rises；
3rd step, bar portion jumping-up, it is thus achieved that the deformation of joint shaped upper part is relatively big, therefore by upper end is carried out gathering stock fall
Low blank height, increases blank upper end diameter；Mould bases is by left-to-right motion, and upset punch alignment die, punch moves downward, pier
First thick sleeve contacts with die, and upset punch continues to decline, and upset blank makes blank upper end shape, and after shaping, punch rises；
4th step, finish-forging upper head: mould bases is by left-to-right motion, finish-forging punch alignment die, and punch declines makes blank
Shaping, it is thus achieved that net shape, after shaping, punch rises；At the end of shaping, push rod drives angled-lift splits to make oblique movement, at forging
While being pushed out, angled-lift splits complete undercut, obtain complicated I shape adapter piece.
Lubricate described in this technique and use phospholeumization to process in extrusion process, subsequent handling is reached by supplemental lubrication agent
Lubricating requirement.
The present invention relates to the steel I shape joint that above-mentioned technique prepares, include successively: head, connecting portion and flat
Pedestal.
Technique effect
Compared with existing casting or Forging Technology, present invention have the advantage that
1. improve workpiece quality and surface roughness, decrease workpiece, defect；
2. improve workpiece mechanical performance, forming technology is stable, and conforming product rate is high；
3. realized by continuous mould, relatively shorten production line, save production time per piece, it is simple to control cost per unit.
Accompanying drawing explanation
Fig. 1 is embodiment forging drawing；
In figure: a is forging drawing front view；B is forging drawing left view；C is forging drawing top view；
Fig. 2 is I-shaped part forming process；
Fig. 3 is mould structure schematic diagram；
Fig. 4 is extrusion process and mould structure schematic diagram；
Fig. 5 is upset forging process and mould structure schematic diagram；
Fig. 6 is finish-forging technique and mould structure schematic diagram；
Fig. 7 is concave die structure chart；
In figure: a is front view；B is top view；
In figure: mould bases 1, upper extrusion die plate 2, guide positioning sleeve 3, guiding guide 4, flexible member 5, punch 6, compression sleeve
7, angled-lift splits 8, upper cavity die 9, lower cavity die 10, push rod 11, finish-forging punch 12, cope match-plate pattern 13, guide positioning sleeve 14, upper jumping-up template
15, guide 16, jumping-up sleeve 17, flexible member 18, jumping-up punch 19 are guided.
Detailed description of the invention
Elaborating embodiments of the invention below, the present embodiment is carried out under premised on technical solution of the present invention
Implement, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following enforcement
Example.
Embodiment 1
As shown in Fig. 3～Fig. 7, the present embodiment includes: be arranged in order extruding punch mechanism, the jumping-up being fixed on mould bases 1
Punch and finish-forging punch and be slideably positioned in the die assembly of mould bases opposite side, wherein: three punch share a set of die group
Part.
As shown in Figure 6 and Figure 7, described die assembly includes: formed when upper cavity die 9, lower cavity die 10, angled-lift splits 8 close
Cylindrical mold cavities, has side core-drawing mechanism of slanting sliding block at Die Design, and equipped with four push rods 11 in lower cavity die 10, push rod 11 upper end is solid
Being scheduled on angled-lift splits 8, there is certain gradient angled-lift splits 8 lateral wall, meets relation
In the present embodiment, there are certain gradient, highly h2=5.6mm in angled-lift splits 8 lateral wall, and draft angle is p=37 °.
As shown in Figure 4, described extruding punch mechanism includes: upper extrusion die plate 2, guide positioning sleeve 3, guide guide 4, bullet
Property element 5, punch 6, sleeve 7, wherein: punch 6 is inside sleeve 7, sleeve 7 is realized floating control by flexible member 5, and by leading
Guiding to guide 4, flexible member 5 other end is fixed on extrusion die plate 2, guides guide 4 fixed by guide positioning sleeve 3
Position, is fixed on extrusion die plate 2.
As it is shown in figure 5, described heading die structure: upper jumping-up template 15, guiding guide 16, jumping-up sleeve 17, elasticity
Element 18, jumping-up punch 19, wherein: jumping-up punch 19 is inside jumping-up sleeve 17, and jumping-up sleeve 17 is realized by flexible member 18
Floating control, and guided by guiding guide 16, flexible member 18 other end is fixed in jumping-up template 15, guides guide
16 are positioned by guide positioning sleeve 14, are fixed in jumping-up template 15.
As shown in Figure 6, described finish-forging die structure: cope match-plate pattern 13 and be fixedly installed on finish-forging punch 12 thereon.
The process that the present embodiment relates to, comprises the following steps:
The first step, employing 20# steel carry out blanking, wherein: a height of 35mm of bar, a diameter of 3.7mm, and the diameter of blank is than even
Joint intermediate shank portion d1The little 0.1mm of diameter.
Second step, the bar preparing joint is extruded, die cavity diameter D1For pressing 13.4mm under 3.8mm, punch, it is thus achieved that
Workpiece lower shape, makes workpiece lower end be filled up completely with full length to d3More than d2=11.8mm.
3rd step, carry out workpiece upper end pressing 4.85mm under jumping-up, punch so that it is be almost full with whole die cavity, on die cavity
Portion D2A diameter of 4.8mm, the top half in bar portion forms boss.
4th step, carry out workpiece top pressing 7.0mm under finish-forging, punch, it is thus achieved that finish-forging shaping form.
This method achieves the forging and molding of I shape joint, is effectively improved the quality of part, improves part machinery
Can, forming technology is stable, and conforming product rate is high.
Claims (7)
1. the continuous upsetting die of I shape joint, it is characterised in that including: be arranged in order the extruding being fixed on mould bases convex
Mold mechanism, heading die structure and finish-forging die structure and be slideably positioned in the die assembly of mould bases opposite side, wherein: three
The punch of extruding punch mechanism shares a set of die assembly；
Described die assembly includes: upper cavity die, with the lower cavity die of push rod and angled-lift splits, wherein: upper cavity die, lower cavity die with
And form cylindrical mold cavities during angled-lift splits Guan Bi；
Described extruding punch mechanism includes: the extrusion die plate that is socketed the most successively, guiding mechanism, compression sleeve and convex
Mould, wherein: the top of compression sleeve and extrusion die plate Elastic Contact, punch is movably set in compression sleeve inside and top and squeezes
Pressuring template is connected；
Described heading die structure: the jumping-up template, guiding mechanism, jumping-up sleeve and the jumping-up that are socketed the most successively are convex
Mould, wherein: the top of jumping-up sleeve and jumping-up template Elastic Contact, jumping-up punch is movably set in jumping-up sleeve inner and top
It is connected with jumping-up template.
The continuous upsetting die of I shape joint the most according to claim 1, is characterized in that, described upper cavity die and angled-lift splits
For side core-drawing mechanism of slanting sliding block, the lateral wall of angled-lift splits is for tilting and meetingWherein: p is angled-lift splits lateral wall
Inclination angle；h2For angled-lift splits height；d4For the greatest length of workpiece lower end.
The continuous upsetting die of I shape joint the most according to claim 2, is characterized in that, described push rod totally four, point
Not being movably set in lower cavity die, the upper end of this push rod contacts with angled-lift splits.
The continuous upsetting die of I shape joint the most according to claim 1, is characterized in that, described Elastic Contact is by setting
The flexible member being placed between compression sleeve or the top of jumping-up sleeve and extrusion die plate or jumping-up template realizes.
The continuous upsetting die of I shape joint the most according to claim 1, is characterized in that, described guiding mechanism includes:
Guide positioning sleeve and guiding guide, wherein: guide positioning sleeve is fixing with extrusion die plate or jumping-up template to be connected, and hole cylinder shape is led
Being socketed on inside guide positioning sleeve to guide by ledge structure, compression sleeve or jumping-up sleeve are movably set in guiding guide
In.
The continuous upsetting die of I shape joint the most according to claim 1, is characterized in that, described finish-forging die structure:
Cope match-plate pattern and be fixedly installed on finish-forging punch thereon.
7. the I shape joint preparation technology according to mould described in any of the above-described claim, it is characterised in that include with
Lower step:
The first step, blanking, use bar, blank diameter is less than joint intermediate shank portion diameter 0.1mm, and charge length is according to part body
Long-pending calculating obtains；
Second step, lower end head extrudes: blank puts into die, the punch alignment upper cavity die of extruding punch mechanism, punch to
Lower motion, first compression sleeve contacts with die, and punch continues to decline, and extrusion billet makes blank lower end head gradually shape, and becomes
After shape, punch rises；
3rd step, bar portion jumping-up, it is thus achieved that the deformation of joint shaped upper part is relatively big, therefore by upper end carries out gathering stock reduction base
Material height, increases blank upper end diameter；Mould bases is by left-to-right motion, and jumping-up punch alignment upper cavity die, punch moves downward, jumping-up
First sleeve contacts with die, and jumping-up punch continues to decline, and jumping-up blank makes blank upper end shape, and after shaping, punch rises；
4th step, finish-forging upper head: mould bases is by left-to-right motion, finish-forging punch alignment upper cavity die, and punch declines makes blank become
Shape, it is thus achieved that net shape, after shaping, punch rises；At the end of shaping, push rod drives angled-lift splits to make oblique movement, at forging quilt
While release, angled-lift splits complete undercut, obtain complicated I shape adapter piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510228081.5A CN104826972B (en) | 2015-05-06 | 2015-05-06 | The continuous upsetting die of I shape joint and forming technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510228081.5A CN104826972B (en) | 2015-05-06 | 2015-05-06 | The continuous upsetting die of I shape joint and forming technology thereof |
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| Publication Number | Publication Date |
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| CN104826972A CN104826972A (en) | 2015-08-12 |
| CN104826972B true CN104826972B (en) | 2016-10-05 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110935839B (en) * | 2019-11-20 | 2021-07-09 | 常山县鑫龙轴承有限公司 | Automatic forging device for bearing inner race |
| CN111136118A (en) * | 2019-12-25 | 2020-05-12 | 北京机电研究所有限公司 | Multi-station movable die holder suitable for projectile deep hole forging |
| CN114192712B (en) * | 2021-12-22 | 2023-01-20 | 二重（德阳）重型装备有限公司 | Die forging forming die and die forging forming method for large L-shaped hollow thin-wall pipeline |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6137341A (en) * | 1984-07-30 | 1986-02-22 | Toyota Motor Corp | Method and apparatus for producing preform blank material for closed forging having irregular sectional shape |
| JPH11347683A (en) * | 1998-06-09 | 1999-12-21 | Tokai Rika Co Ltd | Long shaft, manufacture of long shaft and device for manufacturing long shaft |
| RU2374029C1 (en) * | 2008-03-17 | 2009-11-27 | Гартунг Андрей Валерьевич | Method of blanking by upset of hollow thin-walled thickening of spherical form on bar part of forging with flange and end section |
| CN102284664B (en) * | 2011-07-05 | 2014-04-02 | 哈尔滨工业大学 | Semi-solid forming die and forming method for cavity-variable axisymmetric part |
| CN202411311U (en) * | 2011-11-10 | 2012-09-05 | 深圳航空标准件有限公司 | Cold upsetting die for dovetail groove screw |
| CN103706749A (en) * | 2013-12-30 | 2014-04-09 | 武汉重工铸锻有限责任公司 | Die-forging forming die and process of output end journal of low-speed diesel engine |
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